New XDCS Tech Hat BUFF is a wind resistant hat, made of XDCS Extra Dual Comfort System soft and durable fabric that offers optimal protection both cold and wind. Ideal for high intensity activities like running, biking, cross country skiing or mountaineering in poor light conditions. TECHNICAL FEATURES 90% Polyester, 10% Elastane, Perform fit. Weighs 40g. Absorbs perspiration and pushes it outside, keeping the skin dry. Smooth inner service which provides warmth. Thermal Comfort Cold